查询词典 chondrules

In each chondrule the contents of element Fe and Au in edge part are more than those in inner part of the chondrules respectively.

单个球粒中Fe、Au在其边部比在其内部更为富集。

In this paper, different leaching procedures were used for the chondrules and chondrule fragments of Semarkona, and the U-Th-Pb compositions of leachates and residues were analyzed by TIMS method. The residues normally give higher 206Pb/204Pb ratio, suggesting higher radiogenic Pb compositions. These residues form a Pb-Pb isochron, and give an age of (4566.9±5.8) Ma with MSWD of 26, consistent to the weighted average age of 207Pb/206Pb model ages.

在本文中，对Semarkona中球粒用不同的化学浸洗流程，并测定浸洗溶液和残渣中U-Th-Pb同位素组成，其中浸洗后的残渣均给出相对较高的206Pb/204Pb比值，表明其中含有较多的放射成因Pb同位素组成，这此残渣构成Pb-Pb等时线，给出年龄为(4566.9±5.8)Ma，MSWD=26，与207Pb/206Pb模式年龄在误差范围内一致。

The chemical compositions of the melting chondrules are relatively close to the compositions of the type C olivine aggregates.

熔融球粒的化学成份与C类杆拦石集合体的成份相对较为接近。

According to this scenario, researchers could never find evidence of such early chondrules because all these objects would have been destroyed by the melting of the chondritic asteroids into which they accreted.

在这个情形下，研究人员恐怕永远也无法找到如此早期的球粒证据，因为所有这些物体在聚合的过程中，都会因为球粒陨石小行星熔化而被破坏。

According to this scenario, researchers could never find evidence of such early chondrules because all these objects would have been destroyed by the melting of the chondritic asteroid s into which they accreted.

在这个情形下，研究人员恐怕永远也无法找到如此早期的球粒证据，因为所有这些物体在聚合的过程中，都会因为球粒陨石小行星熔化而被破坏。

The chemical-petrographic types of these meteorites are presented below.Six are unequilibrated ordinary chondrites,including three H3 and three L3;92 meteorites are equilibrated ordinary chondrites,including 24 H-group(13 H4,10 H5,1 H6),64 L-group(2 L4,44 L5,18 L6) and 4 LL-group(3 LL4,1 LL5);the other two belong to stone-iron meteorites.In 6 unequilibrated ordinary chondrites,chondrules are well-shaped,and olivine and low-Ca pyroxene are commonly zoned and have wide ranges of composition.The olivine and low-Ca pyroxene in the other 92 equilibrated ordinary chondrites have similar composition,respectively,and to some degree it reflected thermodynamics equilibration in olivine and lowCa pyroxene.

并根据矿物-岩石学特征，划分了它们的化学-岩石类型：6块属于非平衡型普通球粒陨石(H3和L3群各3块)；92块属于平衡型普通球粒陨石，包括：H群24块(13块H4，10块H5，1块H6)，L群64块(2块L4，44块L5，18块L6)，LL群4块(3块LL4，1块LL5)；另外两块属于石-铁陨石。6块非平衡型普通球粒陨石保存了原始的岩石学和矿物化学特征，包括：清晰的球粒结构、橄榄石和低钙辉石具有明显的成分环带以及极不均一的化学组成等。92块平衡型普通球粒陨石中的橄榄石和低钙辉石显示出均一的化学组成，表明它们达到了一定的热力学平衡。

To reach back, you need to look in the dust grains in chondrites, rather than at the chondrules.

如果是追溯太阳系形成之前，你需要研究球粒状陨石中的灰尘颗粒，而不是陨石球粒。

Looking at these isotopes allows the chondrules to be dated, and they were formed 4.56 billion years ago.

观察这些同位素可以估算出陨石球粒的年龄，他们是在45.6亿年前形成的。

Work out how old the oldest chondrules are, and you know when the sun ignited.

得出最老的陨石球粒的年龄，你就可以知道太阳是什么时候开始燃烧的。

Once a merged mass of chondrules and dust got big enough, things started to happen.

一旦陨石球粒和灰尘聚合的数量变的足够大，有些事情开始发生了。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。